Stove



`March 25,1941. aaKAHN 2,235,886

STOVE Filed Noir. 16', 1938 2 sheets-sheet 1 ,l I y Y I l l u AL f f f ff AWWWM l x x The hangers 2i and 22 and supporting lugs 23 and zd are soconstructed that the entire burner unit may be conveniently and quicklyremoved from or placed Within the range. In positioning the unit in thestove the inner lug 2d is rst engaged over support 22, and outer lug 23then dropped in position onv support 2i.' A longih tudinal row oflaterally directed fuel outlet ports 3l is provided in each of the sideportions of the casting to which are adapted to project jets of damelaterally of the burner element when the burner is ignited. As shown inFigs. -3 and d the greater portion of the ports 3l are positioned in aportion of the casting side wall that is suit-= ably inclined to causethe darne jets from these ports to be projected in a downwardly inclineddirection as weil as laterallv when the burner is in place on the range,this arrangement pro "vidizng for the uniform heating of the radiant 20.

devices across the entire width thereof. To as:l sist in igniting all cithe burner ports 3l4 a transverse row of fuel outlet ports @s isprovided adjacent each end of the casting ille'. 'As shown the row oiports 3d adjacent the closure meinber 2s is spaced further from the endoi the burner than the rear row and the side ports Si terminate at thispoint, such arrangement pro vlding a desired distribution oi heat andfacili tating ignition of the burner without danger of burning theoperator.

As noted above the metallic radiant devices are supported adjacent thesides ci the burner ele= ment and are adapted to be heated by the jetsof naine projecting therefrom. in the illustrated embodiment oi theinvention in which'the supply pipe il@ extends laterally from the centerof the burner element 35 a pair of relatively short radiants do areprovided oneach side of the supply pipe while a single radiant il thatextends substantially the full length of the casting 235 is provided onthe opposite side or" the burner element. Each of the radiants so and Siis of similar con struction and comprises a radiant plate member l2constructed from a relatively thin sheet of suitable heat resistingalloy metal such as a nickel-chromium alloy, and having a large nurnberbrelatively narrow elongated tongues 53 stamped from the metal sheet andbent to lie substantially perpendicular to the plane oi', the plate. Inthe assembled device the tongues i3 extend downwardly into the path cithe laterally projected iiame jets and being constructed from relativelythin sheet metal are adapted to be rapidly heated to a temperature suchas to cause high degree of radiance.

To provide a large number 'of tongues each oi which is rapidly anduniformly heated to a high degree of radiance the tongues is arearranged in rows with the face portions thereof lying in planes thatextend laterally of the burner and at an angle to the flame jetsprojected therefrom, this angle and the spacing between the rows beingsuch that the face portion of each tooth is .directly exposed to a flameand the entire curansomewhat odset from the corresponding tongues idlyand to a higher degree of temperature.

The stamping of the tongues i3 from the plate i2 provides openings at inthe plate that lie adjacent each of the tongues and have a sizecorresponding to the size of the tongues. These openings .are thus ofsubstantial size and provide 'for the free passage of products ofcombustion upwardly through the radiant member without danger or theopenings becoming clogged by the 26 v spattering of particles of grease,food, and the like. For example, a radiant member o this character inwhich the tongues are of the order or 1/8. inch wide and-% inch long'andare arranged in rows spaced 1/2 inoh'apart has been round highlysatisfactory in use both as te sup plying the desired amount of radiantheat and as to maintaining the openings'free for the upward passage oithe products of combustion.

The radiant plate member i2 is supported by 30 a reinforcing member thatadds rigidity to the' relatively thin apertured plate [i2 and provides astrong, light weight radiant device. As shown a channel-shaped member 5oconstructed from relatively inexpensive sheet metal and provided withdepending side portions 5i and outturned iianges 52 is arranged adjacentthe upper face of the plate i2 with the depending side portions 5iserving to space the supporting member from the radiant plate member.The reinforcing and supporting member til extends the entire length oithe radiant member and is rigidly attached to plate d2 along the lengthof the flanges 52 by suitable means such as spot welding. The hotproducts of combustion from the burner element pass upwardly throughopenings fle into the space between the member e@ and plate i2 and aplurality oi relatively large openings provided in the top of member 5@serve to vent the liet combustion products upwardly from this capace.Mie het products of combustion are thus continuously withdrawn upwardlythrough the openings ,fifi and @il and when the burner unit ispositioned beneath a griddle plate, as illustrated in Fig. i, serves-touniformly heat the griddle plate as hereinabove pointed out. Since thesupporting member Si@ is spaced from the plate d2 it operates at a muchlower temperature than the radiant plate and accordingly can be madefrom ordinary steel ortho-like which is a less expensive material. thanthe heat resisting alloy from which the radiant plate member isconstructed to make it durable under the high heat condition at which'itoperates. The cost of the device is further reduced while maintainingade-s quate strength and durability by the provision of the supportingmember Eil which serves to reinforce and stiffen the radiant platemember, thus permitting the useof a relatively thin 'sheet of the vmoreexpensivev heat resisting metal. There is thus provided a light weightand inexpensive radiant device that is strong, rigid and durable in use.f l To provide o, unitary burner and radiant structure the radiantdevices are carriedjvby the burner fifi client 35 and are supportedthereon by means ci bars or straps 5l that extend transversely of tbcburner element and seat on the top oi the casting 35.- The straps aremaintained in proper position on the burner element by means of upwardlyprojecting lugs 5l that are cast integral with the casting 35 and arereceived within openings 5l provided in the straps 55. As shown inlitiga 2 and 4 the openings 51 have a diameter that is somewhat largerthan the diameter of the laas t8 to provide for relative expansionbetween the various parts upon operation of the burner. .a single screw58 threaded into one of the lugs 56 and engaging a conical-shapedretaining sleeve 59 serves to normally prevent the supporting strapsfrom lifting ci! oi the lugs. The radiant devices are supported on thestraps tit by means ci' stirrups il that are punched outtvardly from themetal of the supporting member itil and fit over the ends o! the straps.Screws il thread into the straps 85 and serve to rigidly attach theradiant devices tothe straps. The ber with the radiant devices thusattached is adapted to be readily and inexpensively termed, is highlyefilcient and eective in operation, and is such that it does not tend tobecome contaminated with rood and may be easily kept in a-clean andsanitary condition.

While the form of apparatus herein described constitutes a preferredembodiment oi' the invention, it is to be understood that the inventionis not limited to this precise form of apparatus, and that changes maybe made therein without departing from the scope of the invention whichis cleaned in the appended claims.

What is claimed is:

l. A radiant device o1' the character described comprising a relativelythin. light weight plate v:member constructed from a heat resistingmetal and provided with a plurality of elongated `nicmber constructedfrom a heat resisting metal and provided with a plurality of elongatedtongues stamped from said plate and bent to project substantiallyperpendicular to one tace of the plate, a channel-shaped supportingmember constructed from relatively inexpensive sheet metal and arrangedadjacent the opposite tace of and provided with a plurality of elongated20 tongues stamped from said plate and bent to project outwardly fromone face ci the plate, said tongues being arranged in rows with the faceportions thereof lying in planes that extend laterally of said plate,the tongues of each row being oifset from each other and the innermosttongue of one row being correspondingly onset from the outermost tongueof the next adjacent row, and a supporting member arranged adiacent theopposite face of said plate member and rigidly attached to the platemember with a spacing therebetween. saidsupportingmember serving toreinforce and stiien said plate member' Y the bottom thereof and asupporting member arranged adjacent the top of said plate member andrigidly attached to the plate member with a spacing therebetween, saidsupporting member serving to reinforce and s'tien said plate memberthroughout'substantially the entire egtent oi the plate member, and aplurality of strap members secured to each of said radiant devices forsupporting said plate members and said downwardly extending tongues as aunit and in pre- 50' determined positioning with respect to each other.Y

BERTRAND B. Km.

